#include <stdio.h>

void myfunc(void);
int mysum(int a, int b);

int main(int argc, char** argv)
{
int result = mysum(5, 10);
printf("result : %i+%i=%i\n", 10, 5, result);

return 0;
}

void myfunc(void)
{
    printf("my func called!\n");
    }

        int mysum(int a, int b)
        {
            return a + b;
        } 